Device for regulating the generation of steam in heat power plants



Feb. 7, 1928.

M. EULE DEVICE FOR REGULATING THE GENERATION 0F STEAM IN HEAT POWER PLANTS Filed July 30. 1926 Patented F ebi- 7, 1928.

UNITED TA-res PATENT OFFICE.

MARTIN EULE 0F SPANDAU, GEBh IANY, ASSIGNOR TO SIEKENS-SCHUCKERTWERKE GESELLSCHAFT HIT BESCHBANKTEB HAF'IUNG, 0F SIEMENSSTADT, NEAR BERLIN, GEBMANYyjA COBPORATION'OF GERMANY.

DEVICE FOR BEGULATING THE GENERATION OF STEAK IN POWER PLANTS.

' Application filed 11113-80, 1926, Serial No.

ing the static pressure produced by heavyliquid columns in case appreciable difierences in height exist between the'vessel containing the auxiliary liquid and the regulating device which .is actuated by a transmission liquid responding to the varying pressures of the auxiliary liquid vapor.

In the accompanying drawing I have illustrated in more or less diagrammatic from, an arrangement in which my improvement is embodled.

Referring to this drawing, the operating medium to be controlled, forinstance the rare of the ste m in a steam power passes through the service pipe 1.

pipe is located a vessel 2 which ,con

In this tains an auxiliary liquid, for instance mercury. A discharge pipe 9 for the mercury vapor produced, rises from vessel 2, and passing outside of pipe 1 terminates in a compensating vessel 8 above the sealing liquid 10 contained therein. The purpose of this sealing liquid is to prevent the escape of the auxiliary vapors into the remainder of the control system. This sealing liquid "10 may, for instance, also be mercury, in other words a liquid of great specific weight. It is the object to transfer the vapor pressure created by the boiling of the auxiliary liquid 3 to a control device 6, 7 by which the temperature of the operating medium may be regulated. Devices of this character are well known in the art and their further construction beyond the corrugated diaphragm G is not s own. It is assumed that this control device 6, 7 'is located appre-. ciably higher than the auxiliary vessel 2. If now the control device 6, 7 were directly connected bya pipe line with the lower portion of compensating vessel 8 so that the liquid 10 in vessel 8 would fill the entire aforementioned static pressure 125,984, and in Germany Au ust 7, 1925.

space of the connection and of the control device 6, 7, it would be necessary for the pressure produced by the auxiliary vapor to.

rst overcome the entire static pressure due to the difference in level H before it can exerta pressure on the diaphragm 6 of the control device. For instance if this difference in height should amount to twometers and if mercury should be used as the sealing liquid 10, which is quite desirable for many reasons, a pressure of almost three atmospheres would be necessary in order to overcome the static pressure due to the height of two meters. Since the boiling pressure of mercury at th'reeatmospheres resumes already a very high temperature, t reuse of mercury would be alinost'impossible in many 4 cases, though otherwisedesirable, since it would not-be possible to produce the boil;

ing pressure necessary for overcoming the cury column. y

In order to render the device'within very wide limits independent .ofiany substantial height of the control device above the auxiliary vessel, I propose to connect an intermediate vessel 11 with the compensating of the mer-f' sel-12 islocated higher than vessel 11. Thev steam or vapor escaping from the sealing liquid 3 presses upon the liquid 10 in the compensation receptacle 8 and this liquid transfers its pressure first to the specific lighter interposed liquid 13, and from there to the heavy liquidin receptacle 12 which is connected by pipe 14 with the control device 6, 7 previously mentioned. The difi'erence in elevation H is dealt with by the pipe 1 13 without particularly large forces being required, since the specific weights when mercury and oil, for instance, are employed are as 13.6 1. a

The employmentof compensation vessels thus offers the possibility to render the regulating device independent of external-influences and construction limitations.

If desired, it is of course also possible to operate the control device 6, 7 directly with the lighter liquid, for instance oil, and in that case intermediate receptacle 12 maybe omitted and pipe 13 may be directly connected to device 6, 7. This is an obvious 'modification and illustration thereof has,

therefore, been omitted.

Various modifications and changes may be -made Without departing from the spirit and the scope of the invention, and I desire,

- therefore, that only-such limitations shall be placed thereon as are imposed by the prior art.

I claim as my invention a 1. In an apparatus for controlling the temperature of an operating medium, the combination of a vessel containing an auxiliary liquid exposed to theoperating medieaaav'e um, a compensating vessel having a connec- I tion with the auxiliary vessel to receive the vapors of the auxiliary liquid, a control device for controlling the temperature of the medium, located an appreciable distance above said compensating vessel and beingactuated by the varying vapor pressure o the auxiliary liquid, a sealing liquid in said compensatingvessel for preventing the escape of the auxiliary vapor from the said vessel. and a. communication between the compensating vessel and the control device containing an intermediate transfer vessel located lower than the compensating vessel and a second transfer vessel located in height between the compensating vessel and the control device, the space between said two transfer vessels containing a transfer liquid specifically lighter than the sealing liquid and the space between the second transfer vessel and the control device containing a liquid specifically heavier than the transfer .liquid.

In testimony whereof I aflix my signature.

MARTIN EULE. 

